<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>Document</title>

</head>
<style>
.jb{
    width: 1000px;
    height: 30px;
   
    margin: 0 auto;
    background: url('./img/jb.png') repeat-x;

}
</style>
<body>
    <div class="jb">

    </div>
</body>
</html>